/*
 * Copyright (C) 2007-2010 Geometer Plus <contact@geometerplus.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

package org.geometerplus.fbreader.formats.pdb;

import org.geometerplus.fbreader.formats.FormatPlugin;
import org.geometerplus.zlibrary.core.filesystem.ZLFile;
import org.geometerplus.zlibrary.core.options.ZLStringOption;

import java.io.IOException;
import java.io.InputStream;

public abstract class PdbPlugin extends FormatPlugin {
    @Override
    public boolean acceptsFile(ZLFile file) {
        final String extension = file.getExtension();
        return (extension == "prc") || (extension == "pdb") || (extension == "mobi");
    }

    protected static String fileType(final ZLFile file) {
        ZLFile baseFile = file.getPhysicalFile();

        // TODO: use database instead of option (?)
        ZLStringOption palmTypeOption = new ZLStringOption(file.getPath(), "PalmType", "");
        String palmType = palmTypeOption.getValue();
        if (palmType.length() != 8) {
            byte[] id = new byte[8];
            try {
                final InputStream stream = file.getInputStream();
                if (stream == null) {
                    return null;
                }
                stream.skip(60);
                stream.read(id);
                stream.close();
            } catch (IOException e) {
            }
            palmType = new String(id).intern();
            palmTypeOption.setValue(palmType);
        }
        return palmType.intern();
    }
}
